Police have named 11 corporations as suspects in ongoing investigations into forest and land fires, three of which are foreign-invested firms, according to the Antara news agency.

National police chief General Suyudi Ario Seto declined to name the companies but said the investigations were proceeding without major obstacles.

He told reporters following a plenary Cabinet meeting at the Presidential Palace complex here on Wednesday that accountability would extend beyond the corporate entities.

"This includes both company owners and shareholders who bear responsibility for the corporations linked to forest and land fires in Indonesia," said Suyudi.